[clang] [llvm] Make sanitizer special case list slash-agnostic (PR #149886)

[Devon Loehr via cfe-commits]

DKLoehr wrote:

@jyknight can you weigh in here? I'm ambivalent as to which direction we take (although after #162437 I suppose there's more precedent for option 3), but it would be nice to stop writing `{\\,/}` everywhere we need a file separator.

https://github.com/llvm/llvm-project/pull/149886